bases in hawaii. so there is, you know, some concern over this success by north korea, don. >> so chris, how worried are pentagon officials again about the successful launch? you said there is some success with this but how worried are they about it? >> there are still some ways to go, don. they're worried down the road about north korea marrying its nuclear weapons with this missile technology. in other words, being able to miniaturize a nuclear weapon to put on a warhead, to also be able to aim that missile accurately and to have the type of heat shield that would allow it to come back into the atmosphere without burning up. there's no indication north korea, you know, has made that jump yet. that is a concern down the road, and there's also a concern about what help they may be getting. u.s. official is telling us that one working assumption is that iran helped north korea with this launch. we know in the past u.s. officials have detected north korean engineer going to iran, iranian scientists comi